US6190383B1 - Rotatable electrode device - Google Patents

Rotatable electrode device Download PDF

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Publication number
US6190383B1
US6190383B1 US09/176,292 US17629298A US6190383B1 US 6190383 B1 US6190383 B1 US 6190383B1 US 17629298 A US17629298 A US 17629298A US 6190383 B1 US6190383 B1 US 6190383B1
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electrodes
drive shaft
tissue
apparatus according
elongated housing
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US09/176,292
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Dale Schmaltz
Jenifer Kennedy
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Covidien AG
United States Surgical Corp
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Covidien AG
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Assigned to SHERWOOD SERVICES AG reassignment SHERWOOD SERVICES AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VALLEYLAB INC
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B18/1477Needle-like probes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/320016Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
    • A61B17/32002Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes with continuously rotating, oscillating or reciprocating cutting instruments
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/42Gynaecological or obstetrical instruments or methods
    • A61B2017/4216Operations on uterus, e.g. endometrium
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00053Mechanical features of the instrument of device
    • A61B2018/00184Moving parts
    • A61B2018/00202Moving parts rotating
    • A61B2018/00208Moving parts rotating actively driven, e.g. by a motor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00559Female reproductive organs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00577Ablation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00589Coagulation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206Generators therefor
    • A61B2018/1246Generators therefor characterised by the output polarity
    • A61B2018/1253Generators therefor characterised by the output polarity monopolar
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206Generators therefor
    • A61B2018/1246Generators therefor characterised by the output polarity
    • A61B2018/126Generators therefor characterised by the output polarity bipolar
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/1815Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves
    • A61B2018/1861Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves with an instrument inserted into a body lumen or cavity, e.g. a catheter
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2218/00Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2218/001Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
    • A61B2218/002Irrigation

Abstract

An apparatus for thermal treatment of a tissue mass having an elongated housing having a proximal and a distal end and defining a longitudinal axis, and further including at least two electrodes supported at its distal end and mounted for rotation to facilitate entry and passage through a tissue mass. A drive shaft may be disposed within the elongated housing and operatively engageable with the electrodes for causing their rotational movement. The apparatus may include an electrode gear and a drive shaft gear in cooperative engagement whereby rotation of the drive shaft causes corresponding rotation of the electrodes. Preferably, a motor is operatively connected to the drive shaft causing its rotational movement. Desirably, the distal end of the electrodes are threaded. A method for thermally treating a tissue mass is disclosed.

Description

BACKGROUND

1. Technical Field

The present disclosure relates to an apparatus and method for thermal treatment of a tissue mass with radio frequency (RF) energy. In particular, the present disclosure relates to an apparatus for minimally invasive treatment of intramural leiomyomas.

2. Description of the Related Art

Myomas are currently the leading indication for surgery in women. A myoma is composed of muscle tissue. In women, a tumor of the uterus is a leiomyoma and may also be called a fibroid. Uterine leiomyomas are typically benign tumors located in the muscular layer of the uterus. These tumors affect 20-30% of women during their reproductive years. The highest rate of leiomyomas occur during the fifth decade of a woman's life. Depending on their size and location, leiomyomas can be asymptomatic or they can cause pelvic pain, dyspareunia, urinary problems or menorrhagia.

Currently, there are four types of therapy available to relieve a patient's symptoms due to a myoma: medical management, hysterectomy, myomectomy and myolysis. Medical management is the administration of hormone therapy which shrinks the myoma by inhibiting estrogen production. The disadvantages are adverse side affects and cost.

A hysterectomy involves the total removal of the uterus which can be performed by a variety of methods including laparotomy and vaginal or laparoscopic assisted vaginal hysterectomy (LAVH). The disadvantages of a hysterectomy are the elimination of fertility, long recovery period, early ovarian failure, urinary symptoms, fatigue, changes in sexual interest and function, depression, surgical complications, increase in the probability of developing cardiovascular disease and psychological loss of full womanhood.

A myomectomy procedure includes the removal of a myomatous tumor from the uterine wall. The disadvantages of the myomectomy procedure include treatment complexity in infertility, blood loss, time consumption and long postoperative care. Other complications include uterine perforation, delusional hyponoctrimia and thermos injury.

The above-mentioned invasive procedures for treatment of tumors are extremely disruptive and may cause damage to healthy tissue. For example, during the invasive surgical procedure, a physician must exercise care in not cutting the tumor in a manner that creates seeding of the tumor, which may result in metastasis. In recent years, product development has been directed towards minimizing the traumatic nature of traditional invasive surgical procedures by using non-invasive procedures.

A current non-invasive procedure is myolysis which reduces a myoma tumor mass by applying an electrosurgical cutting wave form with bipolar needles. Bipolar needles transfer localized current to the tissue between the needles. The thermal energy induced by the intrinsic effect of electric current necroses tumor tissue, denatures proteins and destroys vascularity of the myoma tissue. Subsequently, the myoma mass will atrophy if treatment is sufficient throughout.

Ideally, the clinical symptoms recede allowing a patient to return to normal activities. The benefits of myolysis include the advantages of laparoscopic surgery and further include absence of regrowth of the myoma tissue, minimized blood loss, preservation of the uterus, and a 41% reduction of tumor volume and reduction of adhesion formation compared to a myomectomy.

Myolysis may be accomplished either by laparoscopic methods or by endoscopic methods, such as transvaginal. The laparoscopic methods involve use of a cannula through which a myolysis tool may be introduced. The transvaginal approach may be through the cervix or through the fornix.

The presently available myolysis devices suffer from various drawbacks and disadvantages. For instance, sticking the electrodes into a myoma may cause trauma to the uterus upon penetration attempts into the myoma. This is particularly true in the single or dual bipolar needle devices which require multiple penetrations into tissue for complete ablation. U.S. Pat. No. 5,630,426 discloses single and dual bipolar needle devices for necrosis of a tumor.

An article by Dr. Herbert Goldfarb “Bipolar Laparoscopic Needles for Myoma Coagulation,”The Journal of the American Assoc. of Gynecologic Laparoscopis, February. 1995, reports that an average of thirty to fifty passes into different areas of a myoma with the bipolar needle is required in order to achieve complete tissue necrosis. Further, trauma is increased upon retraction of the device due to needle adhesion or sticking to surrounding structures and tissue. Additionally, needle devices of the prior art which rely on puncture-like penetration for insertion are known to deform because of the hard physical properties of a myoma.

Multiple needle devices are known for reducing the number of penetrations required for complete ablation of a tumor mass. U.S. Pat. No. 5,536,267 defines an apparatus that surrounds a tumor with a plurality of needle electrodes and defines an ablative volume. The '267 device, however, may pose a risk of damage or adhesions to surrounding structures because of the puncture-like penetration of the needles. This multiple needle approach has the disadvantage of moving the tissue mass upon insertion thereby affecting surrounding structures and tissue. Further, withdrawal of the needle electrodes from the desiccated tissue may pull on surrounding structures and healthy tissue causing damage thereto. Additionally, U.S. Pat. No. 5,697,909 discloses an electrosurgical probe having an array of isolated electrode terminals for treating structures within a body.

Accordingly, there is a present need in the state of the art for a needle electrode device that reduces the number of needle electrode penetrations required to ablate a tissue mass such as a myoma and further reduces the risk of damage or adhesions to surrounding healthy tissue and structures during needle electrode insertion and retraction. In the treatment of myomas, it is desirable that such a device reduces the risk of perforation of the uterus and damage to the serosa layer. Moreover, prevention of charring of tissue and tissue sticking to the needle electrode during coagulation, improved deployment into a tissue mass, minimized blood loss and speed of procedure are also desired.

SUMMARY

Generally speaking, the present disclosure is directed to an apparatus for the thermal treatment of tissue. The apparatus has particular application in the treatment of myomas although other uses for the apparatus are envisioned.

The apparatus advantageously reduces the number of electrode penetrations thereby substantially reducing the risk of damage or adhesions to surrounding healthy. tissue or structures during electrode insertion and retraction. In a preferred embodiment, the apparatus includes an elongated housing having a proximal end and a distal end and defining a longitudinal axis. At least two electrodes are supported at the distal end of the elongated housing. The electrodes are mounted for rotation to facilitate entry and passage through tissue. The electrodes may include an external threaded portion dimensioned to facilitate advancement and retention of the electrode in the tissue. The threaded portion also increases the effective surface treatment areas of the electrodes thereby providing increased necrosis volume.

Desirably, the apparatus includes a shaft disposed in the elongated housing and operatively engageable with the electrodes. The shaft is mounted for movement relative to the elongated housing to cause electrode rotation. Preferably, each of the electrodes has an electrode gear and the shaft also has a gear. The gears are in cooperative engagement whereby rotation of the shaft causes corresponding rotation of the electrodes. In one embodiment, a motor is operatively connected to the shaft to cause rotational movement of the shaft. Alternatively, the shaft may be manually rotated.

In a preferred embodiment, the apparatus includes a plurality of needle electrodes supported at the distal end of the elongated housing. Desirably, the needle electrodes are RF electrodes and are connected to a RF power source.

A method using the apparatus is disclosed. The method has application in the treatment of benign uterine fibroids and for bipolar myoma coagulation. The method includes the steps of positioning the apparatus adjacent to the surface of a myoma, rotating the needle electrodes to advance the needle electrodes to a position adjacent the myoma center and energizing the electrode needles with electrosurgical energy. Preferably, the needle electrodes are constantly or intermittently irrigated during insertion and retraction of the device. An irrigation step to suppress smoke formation and prevent buildup of eschar on the needle electrodes is also envisioned. In addition, bleeding may be controlled by injecting a coagulant during a coagulating step.

The apparatus and method for use thereof, provides a high level of control for a surgeon due to rotation of the needle electrodes resulting in a low axial force on the tissue mass during electrode insertion and retraction. The low axial force improves stability and control during insertion and the screw or rotating action allows the electrode to quickly attach to the tissue mass and thereby prevent it from slipping off to one side. During retraction, the high level of control afforded the surgeon reduces the risk of disturbing surrounding structures.

BRIEF DESCRIPTION OF THE DRAWINGS

Various preferred embodiment(s) of the present disclosure are described herein, with reference to the drawings, wherein:

FIG. 1 is a schematic view of the electrosurgical system in accordance with the principles of the present disclosure;

FIG. 2 is a cross-sectional view of the electrosurgical apparatus of the system of FIG. 1;

FIG. 3 is an axial view of the distal end of the electrosurgical apparatus;

FIG. 4 is a view illustrating the gear arrangement for connecting the drive shaft and electrodes of the electrosurgical apparatus;

FIG. 5 is an axial view of an alternate embodiment of an electrosurgical apparatus including two electrodes; and

FIG. 6 is a view illustrating insertion of the electrosurgical apparatus through a trocar for treating a myoma site.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

In accordance with the present disclosure, referring now in detail to the drawings wherein like reference numerals identify similar or like components throughout the several views, FIG. 1 illustrates, in schematic view, the system in accordance with the principals of the present disclosure. System 10 generally includes electrosurgical apparatus 12 and power generator 14 electrically connected to apparatus 12. Power generator 14 is a radio-frequency generator providing RF energy, typically, in the range of about 0.1-1.0 MHZ. Power generator 14 may be any commercially available generator suitable to desiccate, coagulate and cause ablation of a tissue mass for the purpose of electrosurgical necrosis.

System 10 may operate in monopolar mode or bipolar mode. When in the monopolar mode, apparatus 12 and power generator 14 are used in conjunction with a grounding pad 16 (shown in phantom in FIG. 1) as is conventional in the art. For most applications, however, system 10 is used in the bipolar mode as will be discussed hereinbelow.

Referring to FIG. 2, various features of the electrosurgical apparatus 12 will now be described. Electrosurgical apparatus 12 includes an elongated housing 60 having a sleeve member 62 and a needle support 64 mounted to a distal end 66 of sleeve member 62. Sleeve member 62 has a longitudinal bore 68 extending the length thereof and defines a longitudinal axis A—A. Needle support 64 functions in supporting a plurality of electrodes 70 which are adapted for rotational movement within needle support 64. Needle support 64 may be connected to sleeve member 66 by any conventional means including adhesives, snap-lock fit, bayonet coupling, etc. In the alternative, sleeve member 62 and needle support 64 may be a single monolithically formed component.

In the preferred embodiment, electrosurgical apparatus 12 includes six (6) electrodes 70 (FIG. 3) supported within needle support 64 and positioned circumferentially about elongated housing 60 in equidistant relation. In an alternate embodiment, illustrated in FIG. 5, electrosurgical apparatus 12 includes two (2) electrodes supported within needle support 64. Referring back now to FIG. 2, each electrode 70 is preferably a needle electrode, i.e., possessing a sharpened distal end to facilitate penetration through tissue. In addition, each electrode 70 includes a threaded portion 72, shown schematically in FIG. 2. Threaded portion 72 of electrode 70 provides significant advantages including: 1) facilitating entry and retention of electrode 70 within a tissue mass (not shown); 2) facilitating exit of electrode 70 from the tissue mass subsequent to the procedure; and 3) increasing effective surface treatment area of electrode 70 thereby enhancing necrosis volume potential. In addition, each electrode 70 has a proximal end 74 defining a gear 76, preferably a spur gear, the significance of which is discussed hereinabove.

As best illustrated in FIG. 4, in conjunction with FIG. 2, electrosurgical apparatus 12 further includes a drive shaft 80 mounted for rotational movement within sleeve member 62. A distal end 82 of drive shaft 80 includes a shaft gear 84, preferably, a pinion gear, which merges with electrode gears 76 whereby rotation of drive shaft 80 causes corresponding rotational movement of electrodes 70 through the cooperating action of the respective gears.

Referring back now to FIG. 2, drive motor 90 is operatively connected to drive shaft 80 to supply the forces necessary to rotate drive shaft 80 and electrodes 70 at a sufficient velocity to enter the tissue mass. Alternatively, it is envisioned that drive shaft 80 may be rotated manually via manual engagement with a handle mounted on proximal end 86 of drive shaft 80.

With reference to FIG. 2, electrosurgical apparatus 12 further includes a plurality of thrust bearing pins 100 disposed within sleeve member 62 adjacent electrodes 70. The number of thrust bearing pins 100 corresponds to the number of electrodes 70, e.g., six. Thrust bearing pins 100 each define an enlarged head 102 which contacts a surface of proximal end 74 of each electrode 70. Thrust bearing pins 100 function to absorb or counter the thrust load of each electrode 70 during rotation and entry into tissue. Thrust bearing pins 100 also serve as the electrical connection between power generator 14 and electrode 70. In particular, thrust bearing pins 100 are in electrical connection with power generator 14 through electrical wires (not shown) which may, e.g., extend through longitudinal openings or passageways in the outer wall 106 of sleeve member 62 and attach to proximal end of each thrust bearing pin 100.

Electrosurgical apparatus 12 may include a conduit or passageway for the introduction of irrigation fluid to the treatment site. Preferably, as shown in FIG. 2, drive shaft 80 includes a central passage 110 which fluidly connects with a fluid channel 114 in needle support 64. The conduit or passageway terminates in a fluid port 118. (See also FIG. 3) The irrigation fluid suppresses smoke formation and prevents buildup of eschar on electrodes 70.

The operation of the electrosurgical apparatus 12 for treating a dense tissue mass, in particular, a myoma, to apply electrosurgical energy to the myoma to cause necrosis thereof will be described. With reference to FIG. 6, a body cavity 144 is insufflated with insufflation gases as is conventional with laparoscopic surgical techniques. Thereafter, a trocar 140 is advanced through the body cavity wall and within body cavity 144 to a position adjacent the targeted site. Electrosurgical apparatus 12 is inserted within trocar 140 and advanced such that needle electrodes 70 are in contacting engagement with the tissue mass, e.g., myoma 150.

Motor 90 is then causing rotation of drive shaft 80 and needle electrodes 70, and advancement of the needle electrodes 70 within myoma 150 and adjacent to myoma center 152. An axial force may be applied by the surgeon to electrosurgical apparatus 12 to facilitate insertion within myoma 150. It is to be appreciated that threaded portion 72 of each needle electrodes 70 facilitates advancement and retention of the needle electrodes 70 within myoma 150 as discussed above.

Motor 90 is deactivated. RF generator 14 is energized to energize electrodes 70 to treat myoma 150 with electrosurgical energy. In a bipolar mode of electrosurgical generator 14, RF energy is transmitted between the (6) needle electrode 70 arrangement to define a treatment volume which encompasses a relatively large volume of tissue. Moreover, the effective treatment volume of the electrodes is further increased through the enhanced electrode surface area as provided through the threaded configuration discussed hereinabove. Accordingly, these improvements provided by the multiple electrode arrangement (e.g., the six (6) electrode arrangement) and the threaded configuration enhance the tissue volume treatment area, thereby minimizing the need for multiple insertions of needle electrodes 70. Similarly, in a monopolar mode, the multiple electrode arrangement provides advantages with respect to enhanced treatment volume of the electrosurgical apparatus 12.

Preferably, necrosis is performed for approximately 8 to 10 seconds. During treatment, constant or intermittent irrigation of needle electrodes 70 from fluid port 118 of system 10 may be applied during penetration and retraction of electrosurgical apparatus 12 to suppress smoke formation and prevents buildup of eschar on needle electrodes 70. A coagulant may be provided during use of electrosurgical apparatus 12 to prevent excessive bleeding.

After necrosis of myoma 150 is complete, motor 90 may cause reverse rotation of drive shaft 80, and corresponding reverse rotation of needle electrodes 70, causing them to rotate and release from myoma 150.

It will be understood that various modifications may be made to the embodiment disclosed herein. For example, while specific preferred embodiments of the electrosurgical apparatus have been described in detail, structures that perform substantially the same function in substantially the same way to achieve the same result may also be used. For example, the electrodes may be in a banked or alternating arrangement. Further, the exposed portion of the electrodes may be retractable within the main housing. Therefore, the above description should not be construed as limiting, but merely as exemplifications of preferred embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the present disclosure.

Claims (26)

What is claimed is:
1. An electrosurgical apparatus for thermal treatment of a tissue mass comprising:
an elongated housing having proximal and distal ends, and defining a longitudinal axis;
at least two electrodes supported at the distal end of the elongated housing, the electrodes mounted for rotation to facilitate entry and passage through tissue and each having a distal end forming a substantially pointed tip with a conductive portion on a surface thereof; and
an RF energy source in electrical connection to the electrodes to supply radio frequency energy.
2. The apparatus according to claim 1, wherein at least one of the electrodes includes an external threaded portion dimensioned to facilitate retention of the one electrode in the tissue.
3. The apparatus according to claim 2, wherein each of the electrodes includes an external threaded portion dimensioned to facilitate retention of the electrodes in the tissue.
4. The apparatus according to claim 1, further including a drive shaft disposed in the elongated housing and operatively engageable with the electrodes, the drive shaft mounted for movement relative to the elongated housing to cause rotation of the electrodes.
5. The apparatus according to claim 4, wherein the drive shaft is adapted for rotation within the elongated housing.
6. The apparatus according to claim 5, wherein each of the electrodes has an electrode gear associated therewith and the drive shaft has a drive shaft gear associated therewith in engagement with the electrode gears, whereby rotation of the drive shaft causes corresponding rotation of the electrodes.
7. The apparatus according to claim 4, further including a motor operatively connected to the drive shaft to cause rotation of the drive shaft.
8. The apparatus according to claim 1, wherein there are six electrodes supported at the distal end of the elongated housing.
9. An electrosurgical apparatus for thermal treatment of a tissue mass comprising:
an elongated housing having proximal and distal ends, and defining a longitudinal axis;
at least three electrodes supported at the distal end of the elongated housing, the electrodes mounted for rotation to facilitate entry and passage through tissue; and
an RF energy source in electrical connection to the electrodes to supply radio frequency energy.
10. The apparatus according to claim 1, wherein the electrodes are radio frequency (RF) electrodes.
11. The apparatus according to claim 10, further including a radio frequency (RF) power source connected to the electrodes for supplying radio-frequency (RF) current.
12. The apparatus according to claim 9, wherein the at least three electrodes have an external threaded portion dimensioned to facilitate retention of the at least three electrodes in the tissue.
13. The apparatus according to claim 9, further including a drive shaft disposed in the elongated housing and operatively engageable with the electrodes, the drive shaft mounted for movement relative to the elongated housing to cause rotation of the electrodes.
14. The apparatus according to claim 9, wherein there are six electrodes supported at the distal end of the elongated housing.
15. An electrosurgical apparatus for thermal treatment of a tissue mass comprising:
a rotatable elongated drive shaft having a proximal end, a distal end and defining a longitudinal axis;
an actuator for cooperatively engaging the drive shaft, whereby the actuator causes rotation of the drive shaft;
a plurality of electrodes, each of the electrodes having a proximal end and an independent conductors distal end forming a substantially pointed tip with a conductive portion on a surface thereof, and a length therebetween defining a longitudinal axis, wherein the plurality of independent conductors are supported adjacent the distal end of the drive shaft and the proximal end of each of the electrodes is adapted for engaging the distal end of the drive shaft, the drive shaft causing rotation of the plurality of electrodes to facilitate entry and passage through tissue; and
an RF energy source in electrical connection to the independent conductors to supply radio frequency energy.
16. The apparatus according to claim 15, further including an elongated housing having a proximal end, a distal end and defining a longitudinal axis, the elongated housing accommodating at least a portion of the drive shaft, and
the plurality of electrodes mounted at the distal end of the elongated housing and the drive shaft is disposed within the elongated housing and mounted for rotation therewithin.
17. The apparatus according to claim 15 further including an end cap mounted to the distal end of the elongated housing, the end cap defining openings for receipt of the plurality of electrodes.
18. The apparatus according to claim 15, wherein the actuator comprises a motor.
19. The apparatus according to claim 15, wherein the drive shaft comprises a drive shaft gear and each of the electrodes comprises an electrode gear in engagement with the drive shaft gear whereby rotation of the drive shaft causes corresponding rotation of the electrodes.
20. The apparatus according to claim 15, wherein the distal end of each of the plurality of electrodes includes a threaded portion to facilitate retention of the plurality of electrodes in the tissue.
21. The apparatus according to claim 15, wherein the plurality of electrodes are retractable from the tissue mass.
22. The apparatus according to claim 15, wherein the actuator is adapted to cause rotation in a reverse direction for retracting the plurality of electrodes from the tissue.
23. A method for thermal treatment of a tissue mass comprising the steps of:
providing an electrosurgical device having at least two rotatable electrodes, each of the electrodes having a distal end forming a substantially pointed tip with a conductive portion on a surface thereof;
positioning the at least two rotatable electrodes adjacent tissue;
rotating the at least two electrodes to cause penetration within the tissue; and
supplying electrosurgical energy to at least two electrodes sufficient to treat the tissue.
24. The method according to claim 23, further including a step of retracting the electrosurgical device from tissue by reversing rotation of each of the electrodes.
25. The method according to claim 23, wherein the first and second electrodes each include external threaded portions and wherein during the step of rotating the threaded portions engage the tissue to facilitate advancement therein.
26. The method according to claim 23, further including a step of irrigating the treated tissue and adjacent tissue.
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Cited By (80)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002080792A1 (en) * 2001-04-04 2002-10-17 Moshe Ein-Gal Electrosurgical apparatus
US6699242B2 (en) * 2000-02-03 2004-03-02 Baylor College Of Medicine Methods and devices for intraosseous nerve ablation
US6712840B2 (en) * 1999-04-23 2004-03-30 Caijin Sun Tumor electrochemical-therapeutic device using electrothermal needles
US20040064136A1 (en) * 2002-09-30 2004-04-01 Paula Papineau Novel device for advancing a functional element through tissue
US20040193152A1 (en) * 2003-03-28 2004-09-30 Jeffrey Sutton Windowed thermal ablation probe
US20040215182A1 (en) * 2000-08-09 2004-10-28 Lee Bruce B Gynecological ablation procedure and system using an ablation needle
US20040267257A1 (en) * 2003-06-30 2004-12-30 George Bourne Apparatus and methods for delivering energy to a target site within bone
US20050149013A1 (en) * 2000-08-09 2005-07-07 Lee Bruce B. Gynecological ablation procedure and system
US20050228373A1 (en) * 2003-03-13 2005-10-13 Scimed Life Systems, Inc. Surface electrode multiple mode operation
US20050228374A1 (en) * 2002-05-27 2005-10-13 Kai Desinger Therapy apparatus for thermal sclerosing of body tissue
WO2006036112A1 (en) * 2004-09-27 2006-04-06 Vibratech Ab Arrangement for therapy of tumours
US20060189972A1 (en) * 2005-02-02 2006-08-24 Gynesonics, Inc. Method and device for uterine fibroid treatment
US20070006215A1 (en) * 2005-07-01 2007-01-04 Gordon Epstein Anchored RF ablation device for the destruction of tissue masses
US20070016183A1 (en) * 2005-07-01 2007-01-18 Bruce Lee Radio frequency ablation device for the destruction of tissue masses
US20070161905A1 (en) * 2006-01-12 2007-07-12 Gynesonics, Inc. Intrauterine ultrasound and method for use
US20070179380A1 (en) * 2006-01-12 2007-08-02 Gynesonics, Inc. Interventional deployment and imaging system
US20070249936A1 (en) * 2006-04-20 2007-10-25 Gynesonics, Inc. Devices and methods for treatment of tissue
US20070249939A1 (en) * 2006-04-20 2007-10-25 Gynesonics, Inc. Rigid delivery systems having inclined ultrasound and curved needle
US20070282318A1 (en) * 2006-05-16 2007-12-06 Spooner Gregory J Subcutaneous thermolipolysis using radiofrequency energy
US20080200861A1 (en) * 2006-12-13 2008-08-21 Pinchas Shalev Apparatus and method for skin treatment
US20090099544A1 (en) * 2007-10-12 2009-04-16 Gynesonics, Inc. Methods and systems for controlled deployment of needles in tissue
US20090138011A1 (en) * 2007-03-13 2009-05-28 Gordon Epstein Intermittent ablation rf driving for moderating return electrode temperature
US20090171340A1 (en) * 2007-12-28 2009-07-02 Boston Scientific Scimed, Inc. Electrosurgical probe having conductive outer surface to initiate ablation between electrode
US20090171339A1 (en) * 2007-12-28 2009-07-02 Boston Scientific Scimed, Inc. Electrosurgical probe having current enhancing protrusions
US20090187182A1 (en) * 2007-11-14 2009-07-23 Gordon Epstein Rf ablation device with jam-preventing electrical coupling member
US20090187183A1 (en) * 2007-03-13 2009-07-23 Gordon Epstein Temperature responsive ablation rf driving for moderating return electrode temperature
US20090287081A1 (en) * 2008-04-29 2009-11-19 Gynesonics , Inc Submucosal fibroid ablation for the treatment of menorrhagia
US20090299143A1 (en) * 2008-05-30 2009-12-03 Conlon Sean P Actuating and articulating surgical device
US20090306683A1 (en) * 2008-06-04 2009-12-10 Ethicon Endo-Surgery, Inc. Endoscopic drop off bag
US20100010298A1 (en) * 2008-07-14 2010-01-14 Ethicon Endo-Surgery, Inc. Endoscopic translumenal flexible overtube
US20100036374A1 (en) * 2008-08-11 2010-02-11 Tyco Healthcare Group Lp Electrosurgical System Having a Sensor for Monitoring Smoke or Aerosols
US20100056926A1 (en) * 2008-08-26 2010-03-04 Gynesonics, Inc. Ablation device with articulated imaging transducer
US20100130817A1 (en) * 2008-11-25 2010-05-27 Ethicon Endo-Surgery, Inc. Tissue manipulation devices
US20100198248A1 (en) * 2009-02-02 2010-08-05 Ethicon Endo-Surgery, Inc. Surgical dissector
US20100324506A1 (en) * 2008-09-26 2010-12-23 Relievant Medsystems, Inc. Systems and methods for navigating an instrument through bone
US20110098704A1 (en) * 2009-10-28 2011-04-28 Ethicon Endo-Surgery, Inc. Electrical ablation devices
US20110105850A1 (en) * 2009-11-05 2011-05-05 Ethicon Endo-Surgery, Inc. Vaginal entry surgical devices, kit, system, and method
US20110115891A1 (en) * 2009-11-13 2011-05-19 Ethicon Endo-Surgery, Inc. Energy delivery apparatus, system, and method for deployable medical electronic devices
US20110124964A1 (en) * 2007-10-31 2011-05-26 Ethicon Endo-Surgery, Inc. Methods for closing a gastrotomy
US20110152923A1 (en) * 2009-12-18 2011-06-23 Ethicon Endo-Surgery, Inc. Incision closure device
US20120116430A1 (en) * 2009-09-29 2012-05-10 Terumo Kabushiki Kaisha Catheter having an arrangement for removing an occluding object
US8206300B2 (en) 2008-08-26 2012-06-26 Gynesonics, Inc. Ablation device with articulated imaging transducer
US8251991B2 (en) 2007-11-14 2012-08-28 Halt Medical Inc. Anchored RF ablation device for the destruction of tissue masses
US8262574B2 (en) 2009-02-27 2012-09-11 Gynesonics, Inc. Needle and tine deployment mechanism
US8361067B2 (en) 2002-09-30 2013-01-29 Relievant Medsystems, Inc. Methods of therapeutically heating a vertebral body to treat back pain
US8419730B2 (en) 2008-09-26 2013-04-16 Relievant Medsystems, Inc. Systems and methods for navigating an instrument through bone
US8425507B2 (en) 2002-09-30 2013-04-23 Relievant Medsystems, Inc. Basivertebral nerve denervation
US8425505B2 (en) 2007-02-15 2013-04-23 Ethicon Endo-Surgery, Inc. Electroporation ablation apparatus, system, and method
US8496574B2 (en) 2009-12-17 2013-07-30 Ethicon Endo-Surgery, Inc. Selectively positionable camera for surgical guide tube assembly
US8506564B2 (en) 2009-12-18 2013-08-13 Ethicon Endo-Surgery, Inc. Surgical instrument comprising an electrode
US8551088B2 (en) 2008-03-31 2013-10-08 Applied Medical Resources Corporation Electrosurgical system
US8579897B2 (en) 2007-11-21 2013-11-12 Ethicon Endo-Surgery, Inc. Bipolar forceps
US20130309030A1 (en) * 2012-05-16 2013-11-21 Nathan A. Winslow Peripheral peg drill component
US8795269B2 (en) 2010-07-26 2014-08-05 Covidien Lp Rotary tissue sealer and divider
US9005198B2 (en) 2010-01-29 2015-04-14 Ethicon Endo-Surgery, Inc. Surgical instrument comprising an electrode
US9011431B2 (en) 2009-01-12 2015-04-21 Ethicon Endo-Surgery, Inc. Electrical ablation devices
US9028483B2 (en) 2009-12-18 2015-05-12 Ethicon Endo-Surgery, Inc. Surgical instrument comprising an electrode
US9078662B2 (en) 2012-07-03 2015-07-14 Ethicon Endo-Surgery, Inc. Endoscopic cap electrode and method for using the same
US9144455B2 (en) 2010-06-07 2015-09-29 Just Right Surgical, Llc Low power tissue sealing device and method
US9220526B2 (en) 2008-11-25 2015-12-29 Ethicon Endo-Surgery, Inc. Rotational coupling device for surgical instrument with flexible actuators
US9233241B2 (en) 2011-02-28 2016-01-12 Ethicon Endo-Surgery, Inc. Electrical ablation devices and methods
USD748259S1 (en) 2014-12-29 2016-01-26 Applied Medical Resources Corporation Electrosurgical instrument
US9254169B2 (en) 2011-02-28 2016-02-09 Ethicon Endo-Surgery, Inc. Electrical ablation devices and methods
US9277957B2 (en) 2012-08-15 2016-03-08 Ethicon Endo-Surgery, Inc. Electrosurgical devices and methods
US9314620B2 (en) 2011-02-28 2016-04-19 Ethicon Endo-Surgery, Inc. Electrical ablation devices and methods
US9320563B2 (en) 2010-10-01 2016-04-26 Applied Medical Resources Corporation Electrosurgical instruments and connections thereto
US9427255B2 (en) 2012-05-14 2016-08-30 Ethicon Endo-Surgery, Inc. Apparatus for introducing a steerable camera assembly into a patient
US9545290B2 (en) 2012-07-30 2017-01-17 Ethicon Endo-Surgery, Inc. Needle probe guide
US9572623B2 (en) 2012-08-02 2017-02-21 Ethicon Endo-Surgery, Inc. Reusable electrode and disposable sheath
USRE46356E1 (en) 2002-09-30 2017-04-04 Relievant Medsystems, Inc. Method of treating an intraosseous nerve
US9724151B2 (en) 2013-08-08 2017-08-08 Relievant Medsystems, Inc. Modulating nerves within bone using bone fasteners
US9724107B2 (en) 2008-09-26 2017-08-08 Relievant Medsystems, Inc. Nerve modulation systems
US9775627B2 (en) 2012-11-05 2017-10-03 Relievant Medsystems, Inc. Systems and methods for creating curved paths through bone and modulating nerves within the bone
US9883910B2 (en) 2011-03-17 2018-02-06 Eticon Endo-Surgery, Inc. Hand held surgical device for manipulating an internal magnet assembly within a patient
US10058342B2 (en) 2006-01-12 2018-08-28 Gynesonics, Inc. Devices and methods for treatment of tissue
US10092291B2 (en) 2011-01-25 2018-10-09 Ethicon Endo-Surgery, Inc. Surgical instrument with selectively rigidizable features
US10098527B2 (en) 2013-02-27 2018-10-16 Ethidcon Endo-Surgery, Inc. System for performing a minimally invasive surgical procedure
US10105141B2 (en) 2008-07-14 2018-10-23 Ethicon Endo-Surgery, Inc. Tissue apposition clip application methods
US10149713B2 (en) 2014-05-16 2018-12-11 Applied Medical Resources Corporation Electrosurgical system
US10265099B2 (en) 2016-02-10 2019-04-23 Relievant Medsystems, Inc. Systems for accessing nerves within bone

Citations (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355642A (en) 1980-11-14 1982-10-26 Physio-Control Corporation Multipolar electrode for body tissue
US4637390A (en) * 1983-12-01 1987-01-20 Nauchno-Issledovatelsky Institut Obschei i Neotlozhno Khirurgii Electrosurgical instrument
US4637392A (en) * 1983-12-21 1987-01-20 Kharkovsky Nauchno-Issledovatelsky Institut Obschei I Neotlozhnoi Khirurgii Bipolar electrocoagulator
US4657017A (en) * 1983-12-01 1987-04-14 Nauchno-Isledovatelsky Institute Obshei I Neotlozhnoi Khirugii Electrosurgical instrument
US4658835A (en) 1985-07-25 1987-04-21 Cordis Corporation Neural stimulating lead with fixation canopy formation
US4711239A (en) * 1985-01-25 1987-12-08 Sorochenko Oleg A Electrosurgical instrument
US4827940A (en) 1987-04-13 1989-05-09 Cardiac Pacemakers, Inc. Soluble covering for cardiac pacing electrode
US5003992A (en) 1989-08-23 1991-04-02 Holleman Timothy W Atraumatic screw-in lead
US5020545A (en) 1990-01-23 1991-06-04 Siemens-Pacesetter, Inc. Cardiac lead assembly and method of attaching a cardiac lead assembly
US5085216A (en) 1989-07-25 1992-02-04 Henley Jr Robert L Nasogastric/nasointestinal enteral feeding tube and method for avoiding tracheobronchial misplacement
US5122137A (en) 1990-04-27 1992-06-16 Boston Scientific Corporation Temperature controlled rf coagulation
US5152299A (en) 1991-04-19 1992-10-06 Intermedics, Inc. Implantable endocardial lead with spring-loaded screw-in fixation apparatus
US5197964A (en) 1991-11-12 1993-03-30 Everest Medical Corporation Bipolar instrument utilizing one stationary electrode and one movable electrode
US5239999A (en) 1992-03-27 1993-08-31 Cardiac Pathways Corporation Helical endocardial catheter probe
US5242441A (en) 1992-02-24 1993-09-07 Boaz Avitall Deflectable catheter with rotatable tip electrode
US5259395A (en) 1992-01-15 1993-11-09 Siemens Pacesetter, Inc. Pacemaker lead with extendable retractable lockable fixing helix
US5431649A (en) 1993-08-27 1995-07-11 Medtronic, Inc. Method and apparatus for R-F ablation
US5499981A (en) 1993-03-16 1996-03-19 Ep Technologies, Inc. Flexible interlaced multiple electrode assemblies
US5507743A (en) 1993-11-08 1996-04-16 Zomed International Coiled RF electrode treatment apparatus
US5527331A (en) * 1993-10-13 1996-06-18 Femrx Method for prostatic tissue resection
US5536267A (en) 1993-11-08 1996-07-16 Zomed International Multiple electrode ablation apparatus
US5609151A (en) 1994-09-08 1997-03-11 Medtronic, Inc. Method for R-F ablation
US5624449A (en) 1993-11-03 1997-04-29 Target Therapeutics Electrolytically severable joint for endovascular embolic devices
US5630426A (en) * 1995-03-03 1997-05-20 Neovision Corporation Apparatus and method for characterization and treatment of tumors
US5683384A (en) 1993-11-08 1997-11-04 Zomed Multiple antenna ablation apparatus
US5697909A (en) 1992-01-07 1997-12-16 Arthrocare Corporation Methods and apparatus for surgical cutting
US5697925A (en) 1995-06-09 1997-12-16 Engineering & Research Associates, Inc. Apparatus and method for thermal ablation
US5697536A (en) * 1992-01-07 1997-12-16 Arthrocare Corporation System and method for electrosurgical cutting and ablation
US5810809A (en) * 1997-01-13 1998-09-22 Enhanced Orthopaedic Technologies, Inc. Arthroscopic shaver incorporating electrocautery
US5904681A (en) * 1997-02-10 1999-05-18 Hugh S. West, Jr. Endoscopic surgical instrument with ability to selectively remove different tissue with mechanical and electrical energy
US5921982A (en) * 1993-07-30 1999-07-13 Lesh; Michael D. Systems and methods for ablating body tissue
US5941876A (en) * 1996-03-11 1999-08-24 Medical Scientific, Inc. Electrosurgical rotating cutting device

Patent Citations (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355642A (en) 1980-11-14 1982-10-26 Physio-Control Corporation Multipolar electrode for body tissue
US4637390A (en) * 1983-12-01 1987-01-20 Nauchno-Issledovatelsky Institut Obschei i Neotlozhno Khirurgii Electrosurgical instrument
US4657017A (en) * 1983-12-01 1987-04-14 Nauchno-Isledovatelsky Institute Obshei I Neotlozhnoi Khirugii Electrosurgical instrument
US4637392A (en) * 1983-12-21 1987-01-20 Kharkovsky Nauchno-Issledovatelsky Institut Obschei I Neotlozhnoi Khirurgii Bipolar electrocoagulator
US4711239A (en) * 1985-01-25 1987-12-08 Sorochenko Oleg A Electrosurgical instrument
US4658835A (en) 1985-07-25 1987-04-21 Cordis Corporation Neural stimulating lead with fixation canopy formation
US4827940A (en) 1987-04-13 1989-05-09 Cardiac Pacemakers, Inc. Soluble covering for cardiac pacing electrode
US5085216A (en) 1989-07-25 1992-02-04 Henley Jr Robert L Nasogastric/nasointestinal enteral feeding tube and method for avoiding tracheobronchial misplacement
US5003992A (en) 1989-08-23 1991-04-02 Holleman Timothy W Atraumatic screw-in lead
US5020545A (en) 1990-01-23 1991-06-04 Siemens-Pacesetter, Inc. Cardiac lead assembly and method of attaching a cardiac lead assembly
US5122137A (en) 1990-04-27 1992-06-16 Boston Scientific Corporation Temperature controlled rf coagulation
US5152299A (en) 1991-04-19 1992-10-06 Intermedics, Inc. Implantable endocardial lead with spring-loaded screw-in fixation apparatus
US5197964A (en) 1991-11-12 1993-03-30 Everest Medical Corporation Bipolar instrument utilizing one stationary electrode and one movable electrode
US5697909A (en) 1992-01-07 1997-12-16 Arthrocare Corporation Methods and apparatus for surgical cutting
US5697536A (en) * 1992-01-07 1997-12-16 Arthrocare Corporation System and method for electrosurgical cutting and ablation
US5259395A (en) 1992-01-15 1993-11-09 Siemens Pacesetter, Inc. Pacemaker lead with extendable retractable lockable fixing helix
US5242441A (en) 1992-02-24 1993-09-07 Boaz Avitall Deflectable catheter with rotatable tip electrode
US5239999A (en) 1992-03-27 1993-08-31 Cardiac Pathways Corporation Helical endocardial catheter probe
US5499981A (en) 1993-03-16 1996-03-19 Ep Technologies, Inc. Flexible interlaced multiple electrode assemblies
US5921982A (en) * 1993-07-30 1999-07-13 Lesh; Michael D. Systems and methods for ablating body tissue
US5431649A (en) 1993-08-27 1995-07-11 Medtronic, Inc. Method and apparatus for R-F ablation
US5527331A (en) * 1993-10-13 1996-06-18 Femrx Method for prostatic tissue resection
US5624449A (en) 1993-11-03 1997-04-29 Target Therapeutics Electrolytically severable joint for endovascular embolic devices
US5683384A (en) 1993-11-08 1997-11-04 Zomed Multiple antenna ablation apparatus
US5536267A (en) 1993-11-08 1996-07-16 Zomed International Multiple electrode ablation apparatus
US5507743A (en) 1993-11-08 1996-04-16 Zomed International Coiled RF electrode treatment apparatus
US5609151A (en) 1994-09-08 1997-03-11 Medtronic, Inc. Method for R-F ablation
US5630426A (en) * 1995-03-03 1997-05-20 Neovision Corporation Apparatus and method for characterization and treatment of tumors
US5697925A (en) 1995-06-09 1997-12-16 Engineering & Research Associates, Inc. Apparatus and method for thermal ablation
US5941876A (en) * 1996-03-11 1999-08-24 Medical Scientific, Inc. Electrosurgical rotating cutting device
US5810809A (en) * 1997-01-13 1998-09-22 Enhanced Orthopaedic Technologies, Inc. Arthroscopic shaver incorporating electrocautery
US5904681A (en) * 1997-02-10 1999-05-18 Hugh S. West, Jr. Endoscopic surgical instrument with ability to selectively remove different tissue with mechanical and electrical energy

Cited By (167)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6712840B2 (en) * 1999-04-23 2004-03-30 Caijin Sun Tumor electrochemical-therapeutic device using electrothermal needles
US6699242B2 (en) * 2000-02-03 2004-03-02 Baylor College Of Medicine Methods and devices for intraosseous nerve ablation
US20080045940A1 (en) * 2000-08-09 2008-02-21 Halt Medical, Inc. Gynecological ablation system with laparoscopic and ultrasound imaging
US20080045939A1 (en) * 2000-08-09 2008-02-21 Halt Medical, Inc. Gynecological ablation system with insufflation assisted imaging
US20040215182A1 (en) * 2000-08-09 2004-10-28 Lee Bruce B Gynecological ablation procedure and system using an ablation needle
US6840935B2 (en) * 2000-08-09 2005-01-11 Bekl Corporation Gynecological ablation procedure and system using an ablation needle
US20050149013A1 (en) * 2000-08-09 2005-07-07 Lee Bruce B. Gynecological ablation procedure and system
US7678106B2 (en) 2000-08-09 2010-03-16 Halt Medical, Inc. Gynecological ablation procedure and system
WO2002080792A1 (en) * 2001-04-04 2002-10-17 Moshe Ein-Gal Electrosurgical apparatus
US20050228374A1 (en) * 2002-05-27 2005-10-13 Kai Desinger Therapy apparatus for thermal sclerosing of body tissue
US20090299366A1 (en) * 2002-05-27 2009-12-03 Celon Ag Medical Instruments Therapy device for thermal sclerosing of body tissue
US10111704B2 (en) 2002-09-30 2018-10-30 Relievant Medsystems, Inc. Intraosseous nerve treatment
US9486279B2 (en) 2002-09-30 2016-11-08 Relievant Medsystems, Inc. Intraosseous nerve treatment
US9421064B2 (en) 2002-09-30 2016-08-23 Relievant Medsystems, Inc. Nerve modulation systems
US9173676B2 (en) 2002-09-30 2015-11-03 Relievant Medsystems, Inc. Nerve modulation methods
US9023038B2 (en) 2002-09-30 2015-05-05 Relievant Medsystems, Inc. Denervation methods
US9017325B2 (en) 2002-09-30 2015-04-28 Relievant Medsystems, Inc. Nerve modulation systems
US8992523B2 (en) 2002-09-30 2015-03-31 Relievant Medsystems, Inc. Vertebral treatment
US8419731B2 (en) 2002-09-30 2013-04-16 Relievant Medsystems, Inc. Methods of treating back pain
US8623014B2 (en) 2002-09-30 2014-01-07 Relievant Medsystems, Inc. Systems for denervation of basivertebral nerves
US9848944B2 (en) 2002-09-30 2017-12-26 Relievant Medsystems, Inc. Thermal denervation devices and methods
US8613744B2 (en) 2002-09-30 2013-12-24 Relievant Medsystems, Inc. Systems and methods for navigating an instrument through bone
US8425507B2 (en) 2002-09-30 2013-04-23 Relievant Medsystems, Inc. Basivertebral nerve denervation
US8628528B2 (en) 2002-09-30 2014-01-14 Relievant Medsystems, Inc. Vertebral denervation
US8361067B2 (en) 2002-09-30 2013-01-29 Relievant Medsystems, Inc. Methods of therapeutically heating a vertebral body to treat back pain
US20040064136A1 (en) * 2002-09-30 2004-04-01 Paula Papineau Novel device for advancing a functional element through tissue
US7326203B2 (en) * 2002-09-30 2008-02-05 Depuy Acromed, Inc. Device for advancing a functional element through tissue
USRE46356E1 (en) 2002-09-30 2017-04-04 Relievant Medsystems, Inc. Method of treating an intraosseous nerve
US8992522B2 (en) 2002-09-30 2015-03-31 Relievant Medsystems, Inc. Back pain treatment methods
US20080027426A1 (en) * 2003-03-13 2008-01-31 Boston Scientific Scimed, Inc. Surface electrode multiple mode operation
US20050228373A1 (en) * 2003-03-13 2005-10-13 Scimed Life Systems, Inc. Surface electrode multiple mode operation
US7455671B2 (en) 2003-03-13 2008-11-25 Boston Scientific Scimed, Inc. Surface electrode multiple mode operation
US20090069800A1 (en) * 2003-03-13 2009-03-12 Boston Scientific Scimed, Inc. Surface electrode multiple mode operation
US20100274241A1 (en) * 2003-03-13 2010-10-28 Boston Scientific Scimed, Inc. Surface electrode multiple mode operation
US7771423B2 (en) 2003-03-13 2010-08-10 Boston Scientific Scimed, Inc. Surface electrode multiple mode operation
US8109927B2 (en) 2003-03-13 2012-02-07 Boston Scientific Scimed, Inc. Surface electrode multiple mode operation
US7278993B2 (en) * 2003-03-13 2007-10-09 Boston Scientific Scimed, Inc. Surface electrode multiple mode operation
US20100222777A1 (en) * 2003-03-28 2010-09-02 Relievant Medsystems, Inc. Windowed thermal ablation probe
US8882764B2 (en) 2003-03-28 2014-11-11 Relievant Medsystems, Inc. Thermal denervation devices
US7258690B2 (en) 2003-03-28 2007-08-21 Relievant Medsystems, Inc. Windowed thermal ablation probe
US20070260237A1 (en) * 2003-03-28 2007-11-08 Jeffrey Sutton Windowed thermal ablation probe
US20040193152A1 (en) * 2003-03-28 2004-09-30 Jeffrey Sutton Windowed thermal ablation probe
US6960208B2 (en) * 2003-06-30 2005-11-01 Boston Scientific Scimed, Inc. Apparatus and methods for delivering energy to a target site within bone
JP4652328B2 (en) * 2003-06-30 2011-03-16 ボストン サイエンティフィック リミテッド Energy delivery device to the target site in the bone
JP2007521066A (en) * 2003-06-30 2007-08-02 ボストン サイエンティフィック リミテッドBoston Scientific Limited Energy delivery device to the target site in the bone
US20040267257A1 (en) * 2003-06-30 2004-12-30 George Bourne Apparatus and methods for delivering energy to a target site within bone
WO2006036112A1 (en) * 2004-09-27 2006-04-06 Vibratech Ab Arrangement for therapy of tumours
US20080058705A1 (en) * 2004-09-27 2008-03-06 Vibratech Ab Arrangement for Therapy of Tumours
US9808310B2 (en) 2005-02-02 2017-11-07 Gynesonics, Inc. Method and device for uterine fibroid treatment
US9987080B2 (en) 2005-02-02 2018-06-05 Gynesonics, Inc. Method and device for uterine fibroid treatment
US20110087100A1 (en) * 2005-02-02 2011-04-14 Gynesonics, Inc. Method and device for uterine fibroid treatment
US7918795B2 (en) 2005-02-02 2011-04-05 Gynesonics, Inc. Method and device for uterine fibroid treatment
US20060189972A1 (en) * 2005-02-02 2006-08-24 Gynesonics, Inc. Method and device for uterine fibroid treatment
US10182862B2 (en) 2005-02-02 2019-01-22 Gynesonics, Inc. Method and device for uterine fibroid treatment
US20070016183A1 (en) * 2005-07-01 2007-01-18 Bruce Lee Radio frequency ablation device for the destruction of tissue masses
US8080009B2 (en) 2005-07-01 2011-12-20 Halt Medical Inc. Radio frequency ablation device for the destruction of tissue masses
US8512333B2 (en) 2005-07-01 2013-08-20 Halt Medical Inc. Anchored RF ablation device for the destruction of tissue masses
US20070006215A1 (en) * 2005-07-01 2007-01-04 Gordon Epstein Anchored RF ablation device for the destruction of tissue masses
US20070179380A1 (en) * 2006-01-12 2007-08-02 Gynesonics, Inc. Interventional deployment and imaging system
US9357977B2 (en) 2006-01-12 2016-06-07 Gynesonics, Inc. Interventional deployment and imaging system
US9517047B2 (en) 2006-01-12 2016-12-13 Gynesonics, Inc. Interventional deployment and imaging system
US10058342B2 (en) 2006-01-12 2018-08-28 Gynesonics, Inc. Devices and methods for treatment of tissue
US20070161905A1 (en) * 2006-01-12 2007-07-12 Gynesonics, Inc. Intrauterine ultrasound and method for use
US7815571B2 (en) 2006-04-20 2010-10-19 Gynesonics, Inc. Rigid delivery systems having inclined ultrasound and needle
US20070249936A1 (en) * 2006-04-20 2007-10-25 Gynesonics, Inc. Devices and methods for treatment of tissue
US20070249939A1 (en) * 2006-04-20 2007-10-25 Gynesonics, Inc. Rigid delivery systems having inclined ultrasound and curved needle
US7874986B2 (en) 2006-04-20 2011-01-25 Gynesonics, Inc. Methods and devices for visualization and ablation of tissue
US8506485B2 (en) 2006-04-20 2013-08-13 Gynesonics, Inc Devices and methods for treatment of tissue
US20070282318A1 (en) * 2006-05-16 2007-12-06 Spooner Gregory J Subcutaneous thermolipolysis using radiofrequency energy
WO2008072237A3 (en) * 2006-12-13 2009-09-03 Zion Azar Apparatus and method for skin treatment
US20090093749A1 (en) * 2006-12-13 2009-04-09 Pinchas Shalev Apparatus and method for skin treatment
EP2091454A4 (en) * 2006-12-13 2012-03-28 Pollogen Ltd Apparatus and method for skin treatment
EP2091454A2 (en) * 2006-12-13 2009-08-26 Pinchas Shalev Apparatus and method for skin treatment
US20080200861A1 (en) * 2006-12-13 2008-08-21 Pinchas Shalev Apparatus and method for skin treatment
US8449538B2 (en) 2007-02-15 2013-05-28 Ethicon Endo-Surgery, Inc. Electroporation ablation apparatus, system, and method
US9375268B2 (en) 2007-02-15 2016-06-28 Ethicon Endo-Surgery, Inc. Electroporation ablation apparatus, system, and method
US8425505B2 (en) 2007-02-15 2013-04-23 Ethicon Endo-Surgery, Inc. Electroporation ablation apparatus, system, and method
US20090138011A1 (en) * 2007-03-13 2009-05-28 Gordon Epstein Intermittent ablation rf driving for moderating return electrode temperature
US20090187183A1 (en) * 2007-03-13 2009-07-23 Gordon Epstein Temperature responsive ablation rf driving for moderating return electrode temperature
US20090099544A1 (en) * 2007-10-12 2009-04-16 Gynesonics, Inc. Methods and systems for controlled deployment of needles in tissue
US8262577B2 (en) 2007-10-12 2012-09-11 Gynesonics, Inc. Methods and systems for controlled deployment of needles in tissue
US8088072B2 (en) 2007-10-12 2012-01-03 Gynesonics, Inc. Methods and systems for controlled deployment of needles in tissue
US8939897B2 (en) 2007-10-31 2015-01-27 Ethicon Endo-Surgery, Inc. Methods for closing a gastrotomy
US20110124964A1 (en) * 2007-10-31 2011-05-26 Ethicon Endo-Surgery, Inc. Methods for closing a gastrotomy
US8241276B2 (en) 2007-11-14 2012-08-14 Halt Medical Inc. RF ablation device with jam-preventing electrical coupling member
US20090187182A1 (en) * 2007-11-14 2009-07-23 Gordon Epstein Rf ablation device with jam-preventing electrical coupling member
US8251991B2 (en) 2007-11-14 2012-08-28 Halt Medical Inc. Anchored RF ablation device for the destruction of tissue masses
US8579897B2 (en) 2007-11-21 2013-11-12 Ethicon Endo-Surgery, Inc. Bipolar forceps
US20090171340A1 (en) * 2007-12-28 2009-07-02 Boston Scientific Scimed, Inc. Electrosurgical probe having conductive outer surface to initiate ablation between electrode
US8585696B2 (en) 2007-12-28 2013-11-19 Boston Scientific Scimed, Inc. Electrosurgical probe having conductive outer surface to initiate ablation between electrode
US20090171339A1 (en) * 2007-12-28 2009-07-02 Boston Scientific Scimed, Inc. Electrosurgical probe having current enhancing protrusions
US8579894B2 (en) 2008-03-31 2013-11-12 Applied Medical Resources Corporation Electrosurgical system
US9566108B2 (en) 2008-03-31 2017-02-14 Applied Medical Resources Corporation Electrosurgical system
US8551088B2 (en) 2008-03-31 2013-10-08 Applied Medical Resources Corporation Electrosurgical system
US8562598B2 (en) 2008-03-31 2013-10-22 Applied Medical Resources Corporation Electrosurgical system
US8568411B2 (en) 2008-03-31 2013-10-29 Applied Medical Resources Corporation Electrosurgical system
US8915910B2 (en) 2008-03-31 2014-12-23 Applied Medical Resources Corporation Electrosurgical system
US20090287081A1 (en) * 2008-04-29 2009-11-19 Gynesonics , Inc Submucosal fibroid ablation for the treatment of menorrhagia
US8771260B2 (en) 2008-05-30 2014-07-08 Ethicon Endo-Surgery, Inc. Actuating and articulating surgical device
US20090299143A1 (en) * 2008-05-30 2009-12-03 Conlon Sean P Actuating and articulating surgical device
US20090306683A1 (en) * 2008-06-04 2009-12-10 Ethicon Endo-Surgery, Inc. Endoscopic drop off bag
US8906035B2 (en) 2008-06-04 2014-12-09 Ethicon Endo-Surgery, Inc. Endoscopic drop off bag
US10105141B2 (en) 2008-07-14 2018-10-23 Ethicon Endo-Surgery, Inc. Tissue apposition clip application methods
US20100010298A1 (en) * 2008-07-14 2010-01-14 Ethicon Endo-Surgery, Inc. Endoscopic translumenal flexible overtube
US8235982B2 (en) 2008-08-11 2012-08-07 Tyco Healthcare Group Lp Electrosurgical system having a sensor for monitoring smoke or aerosols
US20100036373A1 (en) * 2008-08-11 2010-02-11 Ward Arlen K Electrosurgical System Having a Sensor for Monitoring Smoke or Aerosols
US20100036374A1 (en) * 2008-08-11 2010-02-11 Tyco Healthcare Group Lp Electrosurgical System Having a Sensor for Monitoring Smoke or Aerosols
US8652128B2 (en) 2008-08-11 2014-02-18 Covidien Lp Electrosurgical system having a sensor for monitoring smoke or aerosols
US8172836B2 (en) 2008-08-11 2012-05-08 Tyco Healthcare Group Lp Electrosurgical system having a sensor for monitoring smoke or aerosols
US20100056926A1 (en) * 2008-08-26 2010-03-04 Gynesonics, Inc. Ablation device with articulated imaging transducer
US8206300B2 (en) 2008-08-26 2012-06-26 Gynesonics, Inc. Ablation device with articulated imaging transducer
US9724107B2 (en) 2008-09-26 2017-08-08 Relievant Medsystems, Inc. Nerve modulation systems
US8808284B2 (en) 2008-09-26 2014-08-19 Relievant Medsystems, Inc. Systems for navigating an instrument through bone
US9259241B2 (en) 2008-09-26 2016-02-16 Relievant Medsystems, Inc. Methods of treating nerves within bone using fluid
US20100324506A1 (en) * 2008-09-26 2010-12-23 Relievant Medsystems, Inc. Systems and methods for navigating an instrument through bone
US9265522B2 (en) 2008-09-26 2016-02-23 Relievant Medsystems, Inc. Methods for navigating an instrument through bone
US8419730B2 (en) 2008-09-26 2013-04-16 Relievant Medsystems, Inc. Systems and methods for navigating an instrument through bone
US10028753B2 (en) 2008-09-26 2018-07-24 Relievant Medsystems, Inc. Spine treatment kits
US9039701B2 (en) 2008-09-26 2015-05-26 Relievant Medsystems, Inc. Channeling paths into bone
US20100331622A2 (en) * 2008-11-25 2010-12-30 Ethicon Endo-Surgery, Inc. Tissue manipulation devices
US9220526B2 (en) 2008-11-25 2015-12-29 Ethicon Endo-Surgery, Inc. Rotational coupling device for surgical instrument with flexible actuators
US20100130817A1 (en) * 2008-11-25 2010-05-27 Ethicon Endo-Surgery, Inc. Tissue manipulation devices
US10004558B2 (en) 2009-01-12 2018-06-26 Ethicon Endo-Surgery, Inc. Electrical ablation devices
US9011431B2 (en) 2009-01-12 2015-04-21 Ethicon Endo-Surgery, Inc. Electrical ablation devices
US20100198248A1 (en) * 2009-02-02 2010-08-05 Ethicon Endo-Surgery, Inc. Surgical dissector
US8262574B2 (en) 2009-02-27 2012-09-11 Gynesonics, Inc. Needle and tine deployment mechanism
US20120116430A1 (en) * 2009-09-29 2012-05-10 Terumo Kabushiki Kaisha Catheter having an arrangement for removing an occluding object
US8388635B2 (en) * 2009-09-29 2013-03-05 Terumo Kabushiki Kaisha Catheter having an arrangement for removing an occluding object
US20110098704A1 (en) * 2009-10-28 2011-04-28 Ethicon Endo-Surgery, Inc. Electrical ablation devices
US20110105850A1 (en) * 2009-11-05 2011-05-05 Ethicon Endo-Surgery, Inc. Vaginal entry surgical devices, kit, system, and method
US8608652B2 (en) 2009-11-05 2013-12-17 Ethicon Endo-Surgery, Inc. Vaginal entry surgical devices, kit, system, and method
US20110115891A1 (en) * 2009-11-13 2011-05-19 Ethicon Endo-Surgery, Inc. Energy delivery apparatus, system, and method for deployable medical electronic devices
US8496574B2 (en) 2009-12-17 2013-07-30 Ethicon Endo-Surgery, Inc. Selectively positionable camera for surgical guide tube assembly
US8506564B2 (en) 2009-12-18 2013-08-13 Ethicon Endo-Surgery, Inc. Surgical instrument comprising an electrode
US10098691B2 (en) 2009-12-18 2018-10-16 Ethicon Endo-Surgery, Inc. Surgical instrument comprising an electrode
US20110152923A1 (en) * 2009-12-18 2011-06-23 Ethicon Endo-Surgery, Inc. Incision closure device
US9028483B2 (en) 2009-12-18 2015-05-12 Ethicon Endo-Surgery, Inc. Surgical instrument comprising an electrode
US8414571B2 (en) 2010-01-07 2013-04-09 Relievant Medsystems, Inc. Vertebral bone navigation systems
US8535309B2 (en) 2010-01-07 2013-09-17 Relievant Medsystems, Inc. Vertebral bone channeling systems
US9005198B2 (en) 2010-01-29 2015-04-14 Ethicon Endo-Surgery, Inc. Surgical instrument comprising an electrode
US9144455B2 (en) 2010-06-07 2015-09-29 Just Right Surgical, Llc Low power tissue sealing device and method
US10166064B2 (en) 2010-06-07 2019-01-01 Just Right Surgical, Llc Low-power tissue sealing device and method
US8795269B2 (en) 2010-07-26 2014-08-05 Covidien Lp Rotary tissue sealer and divider
US9320563B2 (en) 2010-10-01 2016-04-26 Applied Medical Resources Corporation Electrosurgical instruments and connections thereto
US9962222B2 (en) 2010-10-01 2018-05-08 Applied Medical Resources Corporation Electrosurgical instruments and connections thereto
US10092291B2 (en) 2011-01-25 2018-10-09 Ethicon Endo-Surgery, Inc. Surgical instrument with selectively rigidizable features
US9254169B2 (en) 2011-02-28 2016-02-09 Ethicon Endo-Surgery, Inc. Electrical ablation devices and methods
US10258406B2 (en) 2011-02-28 2019-04-16 Ethicon Llc Electrical ablation devices and methods
US9233241B2 (en) 2011-02-28 2016-01-12 Ethicon Endo-Surgery, Inc. Electrical ablation devices and methods
US9314620B2 (en) 2011-02-28 2016-04-19 Ethicon Endo-Surgery, Inc. Electrical ablation devices and methods
US9883910B2 (en) 2011-03-17 2018-02-06 Eticon Endo-Surgery, Inc. Hand held surgical device for manipulating an internal magnet assembly within a patient
US9427255B2 (en) 2012-05-14 2016-08-30 Ethicon Endo-Surgery, Inc. Apparatus for introducing a steerable camera assembly into a patient
US10206709B2 (en) 2012-05-14 2019-02-19 Ethicon Llc Apparatus for introducing an object into a patient
US8795279B2 (en) * 2012-05-16 2014-08-05 Biomet Manufacturing, Llc Peripheral peg drill component
US20130309030A1 (en) * 2012-05-16 2013-11-21 Nathan A. Winslow Peripheral peg drill component
US9788888B2 (en) 2012-07-03 2017-10-17 Ethicon Endo-Surgery, Inc. Endoscopic cap electrode and method for using the same
US9078662B2 (en) 2012-07-03 2015-07-14 Ethicon Endo-Surgery, Inc. Endoscopic cap electrode and method for using the same
US9545290B2 (en) 2012-07-30 2017-01-17 Ethicon Endo-Surgery, Inc. Needle probe guide
US9572623B2 (en) 2012-08-02 2017-02-21 Ethicon Endo-Surgery, Inc. Reusable electrode and disposable sheath
US9788885B2 (en) 2012-08-15 2017-10-17 Ethicon Endo-Surgery, Inc. Electrosurgical system energy source
US9277957B2 (en) 2012-08-15 2016-03-08 Ethicon Endo-Surgery, Inc. Electrosurgical devices and methods
US9775627B2 (en) 2012-11-05 2017-10-03 Relievant Medsystems, Inc. Systems and methods for creating curved paths through bone and modulating nerves within the bone
US10098527B2 (en) 2013-02-27 2018-10-16 Ethidcon Endo-Surgery, Inc. System for performing a minimally invasive surgical procedure
US9724151B2 (en) 2013-08-08 2017-08-08 Relievant Medsystems, Inc. Modulating nerves within bone using bone fasteners
US10149713B2 (en) 2014-05-16 2018-12-11 Applied Medical Resources Corporation Electrosurgical system
USD748259S1 (en) 2014-12-29 2016-01-26 Applied Medical Resources Corporation Electrosurgical instrument
US10265099B2 (en) 2016-02-10 2019-04-23 Relievant Medsystems, Inc. Systems for accessing nerves within bone

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